Brake for railway-cars



(No Model.)

G. W. DICKINSON & H. H. WARNER. BRAKE FOR RAILWAY CARS.

No.-531,588. matented Dec. 25,1894.

' v/gy madw m V UNITED, ST TE GEORGEW. DICKINSON AND HENRY H. WARNER, OF TACOMA, IVASHINGTON.

PATENT f Orrron.

BRAKE FoR RAILWAY-CARS.

SPECIFIGATIQN forming part of Letters Patent No. 531,588, dated December 25, 1894. Application filed April 18,1394, Serial N... 508,019. (No model.)

' being had to the accompanying drawings, and

1 tolette'rs of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings, is a representation of a bottom plan vi ew. of the invention. Fig. 2 is a detail of fulcrum.

. This invention relates to car brake mechanism, and is designed to improve existing mechanisms of this character whereby the hand brakes may become more serviceable-in 1 connection with the air, or powerbrake; and the lnvention consists in the novel construction and combination of parts all as hereinafter specified and pointed out in the accompanying claims.

The accompanying drawings represent an arrangement of brake mechanism which in general is similar to that known as the Hodge system, but which also embodies our improvements as will now be described.

In the said drawings, the letters A, A", designate the two levers to which the hand and power mechanisms for the two ends of the car are connected, the hand brake rods being marked B and B, thecylinder levers G and O, the connecting rods D and D, and the cylinder lever rod E. These levers A and A are usually termed floating levers, and a feature of our present invention consists in fulcruming said levers intermediate of their end portions upon depending bracketsF, E, braced at f, and in connecting the rods D and D to said levers between their centers and the power brake ends, instead of at the centers, as in the oldform. By this change we accomplish the following object: In the movements of the levers A, A, the hand brake ends of holding and maintaining the power of the air brakes should they, from any cause, leak off, and'become useless.

A further feature of the invention consists in making a sliding connection between the rods D, D, and the respective cylinder levers C, O, by means of a slotted jaw d, as shown. In the old form, the rods were fixed at this point by a simple pivotal connection. By the present arrangement, the hand brakes may, be operated separately, and are effective at all times, to help or assist the power brakes as well. The arrangement also makes the brakes of each end of car independent, so that 1 in the event of any breakage or defect at one 1, l, the live truck levers; J, J, the dead truck levers; K, the brake shoes, and L the power nection between each of said levers and the power brake mechanism, such points of connection being between the fnlcrums and the power brake ends, substantially as specified.

2. In car brake mechanisms, the combination of the cylinder levers, the hand brake rods, the levers A, A, the rods D, D forming the connections between the cylinder 10- vers and the levers A, A, said rods having each a sliding connection with the respective cylinder lever and a connection with the lever A or A between its fulcrum and power brake end, substantially as specified.

.3. In car brake mechanisms of the class described, the rods D, D having each a sliding connection at one end portion with the respective cylinderlevers, and at the other end ter and its power brake end, substantially as specified.

4. In car brake mechanisms, the combination of the brake shoes, the lever actuating said shoes and fnlcruined intermediately of its end portions, the intermediate connections between said lever and shoes, the hand brake red, the cylinder lever, and the rod having a sliding connection at one end portion with the cylinder lever and at the opposite end portion a connection with the said intermediately fulcrumed lever between the fulcrumof the latter, and its power brake end, snbstantially as specified.

5. In car brake mechanism, the combination of the cylinder levers C, G, the rod E, connecting said levers, the interinediately fulcruined levers A, A, the rods D, D having each a sliding connection at one end portion 

